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Invitation to the Technology Innovation Cooperation and Sharing Program
2021-11-09
There is a saying circulating in the circle of friends: "Pork didn't expect to lose to masks, and masks didn't expect to lose to helmets." This is mainly because on June 1st of this year, a nationwide "One Helmet, One Belt" protective action will be launched, during which traffic police across the country will conduct unified actions to strictly check for behaviors such as not wearing helmets and not wearing seat belts. Currently, helmet prices vary three times a day and have already surpassed the popularity of masks. Recently, Jiangsu Boshi has received many helmet orders, and today I want to talk about carbon fiber helmets.
Helmets are protective gear used to protect the head. They can protect the wearer's head from impact, thereby reducing injuries or even saving lives. They are important safety equipment for cycling and are also essential protective devices for military training and operations. Currently, helmets on the market are mainly divided into four types: full-face helmets, 3/4 helmets, half helmets, and flip-up helmets. The structure of a helmet generally includes an outer shell, cushioning layer, inner lining, jaw guard, straps, and lenses.
Among them, the outer shell is the outermost layer of the helmet that bears and disperses impact during a collision; therefore, the choice of outer shell material is very important. The cushioning layer provides cushioning effect when subjected to strong impacts and is usually made from materials that can absorb collision energy, are non-toxic, harmless, sweat-absorbent, and breathable. Most cushioning layers are made from expanded polystyrene (EPS) material. The helmet's outer shell is the first line of defense for protecting the head; thus, the choice of outer shell material is crucial. Commonly used outer shell materials include ABS, PC/ABS, PC, fiberglass reinforced materials, and carbon fiber composites.
Carbon fiber is a high-strength and high-modulus fiber with a carbon content of over 90%, making it the best in terms of high-temperature resistance among all synthetic fibers. It is made from acrylic and viscose fibers through high-temperature oxidation and carbonization and is an excellent material for manufacturing high-tech equipment such as aerospace instruments. In simple terms, carbon fiber is very strong, very light, has high technological content but is also very expensive. Based on current orders received by Boshi, due to price constraints, most carbon fiber helmet orders are for police use or JY.
What are the special features of carbon fiber? First, let's look at its physical properties. Carbon fiber helmets are black with woven patterns; walking in the dark does not raise concerns about being discovered by enemies. Additionally, carbon fiber is very lightweight; wearing it on your head does not create a sense of pressure and can reduce burden. Now let's examine the mechanical properties of carbon fiber: although it has a low density, its strength is very high. When the head suffers an impact, a carbon fiber helmet can withstand a significant portion of the force to protect the user's safety. Moreover, carbon fiber has a high tensile modulus and is not easily damaged; it has a relatively long service life.
In addition, carbon fiber has stable chemical properties and is not corroded by acids, bases, or salts. Police officers and special forces may need to enter various places due to their work and tasks and face various unknown hazards. The corrosion resistance of carbon fiber helmets can withstand these hazards. Most importantly, carbon fiber itself is non-toxic and non-polluting; it does not cause any harm to the human body. Therefore, carbon fiber was initially applied in aerospace and military fields but has gradually expanded into areas such as medical devices, sports equipment, and building reinforcement.
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Address: Room 502, Building 23, Technology Oasis, 1999 Yishan Road, Minhang District, Shanghai
Shanghai Xintianhe Resin Co., Ltd.
Address: Room 502, Building 23, Science and Technology Oasis, 1999 Yishan Road, Minhang District, Shanghai
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